Well-known Member

If you output 1280x768 from your mac with an anamorphic disc it will be the correct aspect.
If you put up a non anamorphic image (a photo) it would be squashed, just think of it like your widescreen TV, it is exactly the same.

Active Member

if you output 1024x768 and tell (some) dvd programs (windvd in particular) that you are using a widescreen monitor, they will output an amamorphic image, thus you get the correct ratio with 1:1 mapping

Active Member

Then adjust the Horizontal and vertical size until the image snaps into focus.
You will then need to adjust the position as the image will be all over the place.

The pixels on the PHD8 are rectangular not square, so 1024x768 will fill the screen, a bit like watching a 4:3 broadcast on 16:9 mode.

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Giz, which set-up patterns do you use to get 1:1 pixelmap?
I just got my 50" last night and tried to use the test-screens in the DVDO HD+. However, I think I have a bit of difficulty using them correct - so I was wondering if there was a better method?

Well-known Member

If you use a pal disc is puts an image out on your screen that just uses 720x576 pixels, you can then move this round the screen to make sure it is mapped across the lot. Like on a laptop when you choose not to scale, if you give it 640x480 you get a small window in the middle but razor sharp, same thing.

You must use the scalers internal patterns, one line on one line off, it is the only way you can do it.

Active Member

If you use a pal disc is puts an image out on your screen that just uses 720x576 pixels, you can then move this round the screen to make sure it is mapped across the lot. Like on a laptop when you choose not to scale, if you give it 640x480 you get a small window in the middle but razor sharp, same thing.

You must use the scalers internal patterns, one line on one line off, it is the only way you can do it.

Click to expand...

Hate to cause trouble, but could you please elaborate a bit on your last sentence?

Well-known Member

You should have a pattern in the HD+ that has one row of pixels that are black and the next row that are white.
You will have this for verical and for Horizontal.

Set your scaler to 1024x768 and at 60Hz to start with, and do it with a 60Hz signal going in (or 59.94 before anyone pulls me up on details! ).
Now get the Horizontal pattern up and adjust the H width on the PHD8 in the pos/size menu, you will see when it is right as the whole thing should just snap into place. When it does then you need to stand next to the screen and adjust the clock phase until the noise disappears from the image.
Now put up the Vertical pattern and do the same thing buy adjust using the Vertical size until it snaps into place.
You will now need to change the position of the image as you probably have big black borders down one side and at the top or bottom, when you position it you should find that it just fills the whole screen.

Now put a 50Hz disc in and do the same thing while outputting 1024x768 at 50Hz, you may find that when you get the processing of the screen to cut out you have slight black borders on both sides, you can't seem to get round that with a 50Hz signal, you need to reduce the front porch etc. lower than the screen will accept. So you have to live with slight black borders or widen the image slightly and loose 1:1 mapping.

Active Member

You should have a pattern in the HD+ that has one row of pixels that are black and the next row that are white.
You will have this for verical and for Horizontal.

Set your scaler to 1024x768 and at 60Hz to start with, and do it with a 60Hz signal going in (or 59.94 before anyone pulls me up on details! ).
Now get the Horizontal pattern up and adjust the H width on the PHD8 in the pos/size menu, you will see when it is right as the whole thing should just snap into place. When it does then you need to stand next to the screen and adjust the clock phase until the noise disappears from the image.
Now put up the Vertical pattern and do the same thing buy adjust using the Vertical size until it snaps into place.
You will now need to change the position of the image as you probably have big black borders down one side and at the top or bottom, when you position it you should find that it just fills the whole screen.

Now put a 50Hz disc in and do the same thing while outputting 1024x768 at 50Hz, you may find that when you get the processing of the screen to cut out you have slight black borders on both sides, you can't seem to get round that with a 50Hz signal, you need to reduce the front porch etc. lower than the screen will accept. So you have to live with slight black borders or widen the image slightly and loose 1:1 mapping.

Click to expand...

Thanks!
I guess you mean 1366*768 (since I have a 50" - wrong thread I know)
Do you adjust the clock phase on the panny or in the dvdo?

Active Member

Yeah if you have the 50" then you need 1366.
I adjusted it on the panny.

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Succes! After switching to RGB there were no problems getting it done (just showing the big difference between component and rgb). Vertical and horizontal are looking spot on! However, I have a testpattern on the DVDO called "checkboard" which is horizontal and vertical. With this pattern I get a flicker (like a 50hz crt tv) in the top left half of the screen. I have tried chaning clock phase, but it doesnt help. The flicker does not appear in any other testpattern and - as far as I can tell at the moment - can not be seen during regular movie playback. Any good advise as to how I can correct this or is it a limitation of the plasma?